Compare with other stress relief toys for adults, the super-size magnet balls are designed with the comfort of the palm of your hand in mind, and the size is ergonomic, everyone can hold the balls in a comforable state. Our Large magnetic balls are made of premium magnetic metal, enough durable and fun. Everyday when you feel more pressure, you can pick up the super magnetic balls on your table, grab it and roll them, release all your stress as much as you can and be the best of yourself.